Ok, to confirm your getting a white page but no errors at all written to your logs?
Are you developing this on your local machine, cloud or shared hosting? Can you confirm that logging is actually enabled?
May I also ask why you are using this source code, it is known to be quite out of date with a few
security issues?
It also requires Memcache and similar specifications as http://www.bvlist.com/forumdisplay.php?f=80, which is a much more stable source code.
P